undefined reference to `std::ios_base::Init::Init()'
You can resolve this in several ways:
- Use
g++in stead ofgcc:g++ -g -o MatSim MatSim.cpp - Add
-lstdc++:gcc -g -o MatSim MatSim.cpp -lstdc++ - Replace
<string.h>by<string>
This is a linker problem, not a compiler issue. The same problem is covered in the question iostream linker error – it explains what is going on.
Most of these linker errors occur because of missing libraries.
I added the libstdc++.6.dylib in my Project->Targets->Build Phases-> Link Binary With Libraries.
That solved it for me on Xcode 6.3.2 for iOS 8.3
Cheers!